Sponge brush



July 10, 1956 c. P. FREDERICKS SPONGEI BRUSH Filed April 30, 1952 I NVEN TOR.

ATTDRN EYS This invention relates to brushes, and in particular a brushin which the bristles thereof are replaced with a web of cellulosesponge shaped to correspond with the bristles of a brush and secured ina back from which a handle extends.

The purpose of this invention is to provide a substitute for thebristles of a brush.

In some types of brushes and particularly brushes used in the plasteringtrade bristles are being replaced with nylon and as the nylon bristleshave no absorptive characteristics the brushes do not hold water. Inbrushing a finish or white coat of a plaster wall it is necessary thatthe brush carry water and for this reason brushes with nylon bristlesare not satisfactory. With this thought in mind this inventioncontemplates a brush in which the bristles are replaced with a cellulosesponge and with the cellulose sponge shaped to correspond with thebristles of a brush the device is adapted for brushing a recentlyapplied white coat to a plaster wall and also for applying differenttypes of water paint such as calcimining and whitewashing and it is alsoadapted for use in applying emulsied synthetic paints, disinfectants,liquid tar products, wallpaper paste and waterproofing material toconcrete and the like.

The object of this invention is, therefore, to provide means formounting a cellulose sponge in a back with a handle extended therefromwhereby the sponge replaces the bristles of a brush.

Another object of the invention is to provide a brush that carries acomparatively large amount of water.

A further object of the invention is to provide a sponge brush which isof a simple and economical construction.

With these and other objects and advantages in View the inventionembodies a back having spaced longitudinally disposed grooves extendedtherethrough with a handle extended from the side opposite to that inwhich the grooves are formed and a sponge web having tongues ex tendedinto the grooves of the back.

Other features and advantages of the invention will appear from thefollowing description taken in connection with the drawing, wherein:

Figure l is an exploded view showing an end elevation of the improvedbrush with the sponge web separated from the back and handle.

Figure 2 is a perspective view illustrating the design and arrangementof the brush.

Figure 3 is a cross section taken on line 3 3 of Fig. 2 showing theparts of the brush assembled.

Figure 4 is a longitudinal section taken on line 4 4 of Fig. 1 showingthe back and handle with the sponge web omitted.

Referring now to the drawings wherein like reference characters denotecorresponding parts the improved sponge brush of this invention includesa web of cellulose sponge or other suitable material, a back 11 havingspaced apart flanges extended therefrom and there is also provided atongue 24 which is arranged between the flanges. The flanges and tonguecoact to define therebetween spaced parallel longitudinally disposedgrooves ed rStates Patent O 12 and 13 in which tongues 14 and 15 of thesponge 10 are positioned with the parts assembled, and a handle 16extended from the side of the back opposite to that in which the grooves12 and 13 are positioned.

In the design shown the sponge 10 is provided with flat sides havingarcuate outer portions 17 and 18 that taper to a point 19, and thetongues 14 and 15, which eX- tend from the opposite edge are providedwith tapering inner surfaces 20 and 21, respectively which are inclinedto correspond with surfaces 22 and 23 of the tongue 24 that ispositioned between the slots 12 and 13 of the back 11. The tongue 24 ispositioned to extend into a slot 25 in the sponge 10, as illustrated inFig. 3.

With the parts formed in this manner the tongues of the sponge 10 aresecured in the grooves of the back with water proof glue or othersuitable adhesive and the back and handle are formed of a suitableplastic. It will be understood, however, that the back and handle may beformed of wood or other suitable material and a sponge may be secured inthe back by other suitable means.

The tongues 14 and 15 extend into the grooves 12 and 13 and the outersurfaces of the tongues are held by flanges 26 and 27 which extend fromthe edges of the back 11.

The cellulose sponge is capable of carrying a greater quantity of waterthan the bristles of a brush and not being subject to deterioration bylime water the life thereof is indefinite.

Brushes of this type may be formed. of different sizes such as fromone-fourth of an inch in width to three feet in width and the thicknessof the sponge material may be varied accordingly.

It will also be understood that other modications within the scope ofthe appended claim may be made in the brush without departing from thespirit of the invention.

What is claimed is:

In a cellulose sponge brush, the combination which comprises a handleextended from a back, said back being substantially rectangular-shape incross section and being positioned in a plane substantiallyperpendicular to the handle, a centrally positioned longitudinallydisposed tongue extended from the surface of the back opposite to thatfrom which the handle extends, the side surfaces of said tongue beinginclined outwardly from the intersection of the tongue with the back toa greater width at the extended end of the tongue, longitudinallydisposed flanges extended from the sides of the back, spaced from andparallel to the tongue,I said tongue and said flanges forming open endedslots, said anges having arcuate outer surfaces merging intocorrespondingly shaped surfaces of said back, and a longitudinallydisposed cellulose sponge web having parallel side surfaces tapering toa point in a plane extended through the longitudinal center of the backand handle and said web having tongues positioned between the tongueextended from the center of the back and the flanges extended from theedges thereof, said tongues extended from the web being shaped tocorrespond with the cross sectional areas between the tongue of the backand anges at the edges thereof.

References Cited in the file of this patent UNITED STATES PATENTS222,166 Wadsworth et a1. Dec. 2, 1879 701,278 Adcock lune 3, 1902868,609 Martin Oct. 15, 1907 1,645,479 Golden Oct. 11, 1927 2,210,967Vaughn Aug. 13, 1940 2,286,944 Altland June 16, 1942 y2,517,213Kautenberg Aug. 1, 1950

